Flattened source tree.

2026-09-18 22:55:46 +00:00 · 2011-07-26 15:16:34 +02:00
parent 71f4adc3ec
commit 0f93e8f252
37 changed files with 13 additions and 189 deletions
@@ -0,0 +1,189 @@
+//========================================================================
+// GLFW - An OpenGL library
+// Platform:    Win32/WGL
+// API version: 3.0
+// WWW:         http://www.glfw.org/
+//------------------------------------------------------------------------
+// Copyright (c) 2002-2006 Marcus Geelnard
+// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//    claim that you wrote the original software. If you use this software
+//    in a product, an acknowledgment in the product documentation would
+//    be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such, and must not
+//    be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source
+//    distribution.
+//
+//========================================================================
+
+#include "internal.h"
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW internal API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Return GL_TRUE if joystick is present, otherwise GL_FALSE
+//========================================================================
+
+static GLboolean isJoystickPresent(int joy)
+{
+    JOYINFO ji;
+
+    // Is it a valid stick ID (Windows don't support more than 16 sticks)?
+    if (joy < GLFW_JOYSTICK_1 || joy > GLFW_JOYSTICK_16)
+        return GL_FALSE;
+
+    // Is the joystick present?
+    if (_glfw_joyGetPos(joy - GLFW_JOYSTICK_1, &ji) != JOYERR_NOERROR)
+        return GL_FALSE;
+
+    return GL_TRUE;
+}
+
+
+//========================================================================
+// Calculate normalized joystick position
+//========================================================================
+
+static float calcJoystickPos(DWORD pos, DWORD min, DWORD max)
+{
+    float fpos = (float) pos;
+    float fmin = (float) min;
+    float fmax = (float) max;
+
+    return (2.f * (fpos - fmin) / (fmax - fmin)) - 1.f;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+//////                       GLFW platform API                      //////
+//////////////////////////////////////////////////////////////////////////
+
+//========================================================================
+// Determine joystick capabilities
+//========================================================================
+
+int _glfwPlatformGetJoystickParam(int joy, int param)
+{
+    JOYCAPS jc;
+
+    if (!isJoystickPresent(joy))
+        return 0;
+
+    // We got this far, the joystick is present
+    if (param == GLFW_PRESENT)
+        return GL_TRUE;
+
+    // Get joystick capabilities
+    _glfw_joyGetDevCaps(joy - GLFW_JOYSTICK_1, &jc, sizeof(JOYCAPS));
+
+    switch (param)
+    {
+        case GLFW_AXES:
+            // Return number of joystick axes
+            return jc.wNumAxes;
+
+        case GLFW_BUTTONS:
+            // Return number of joystick axes
+            return jc.wNumButtons;
+
+        default:
+            break;
+    }
+
+    return 0;
+}
+
+
+//========================================================================
+// Get joystick axis positions
+//========================================================================
+
+int _glfwPlatformGetJoystickPos(int joy, float* pos, int numaxes)
+{
+    JOYCAPS jc;
+    JOYINFOEX ji;
+    int axis;
+
+    if (!isJoystickPresent(joy))
+        return 0;
+
+    // Get joystick capabilities
+    _glfw_joyGetDevCaps(joy - GLFW_JOYSTICK_1, &jc, sizeof(JOYCAPS));
+
+    // Get joystick state
+    ji.dwSize = sizeof(JOYINFOEX);
+    ji.dwFlags = JOY_RETURNX | JOY_RETURNY | JOY_RETURNZ |
+                 JOY_RETURNR | JOY_RETURNU | JOY_RETURNV;
+    _glfw_joyGetPosEx(joy - GLFW_JOYSTICK_1, &ji);
+
+    // Get position values for all axes
+    axis = 0;
+    if (axis < numaxes)
+        pos[axis++] = calcJoystickPos(ji.dwXpos, jc.wXmin, jc.wXmax);
+
+    if (axis < numaxes)
+        pos[axis++] = -calcJoystickPos(ji.dwYpos, jc.wYmin, jc.wYmax);
+
+    if (axis < numaxes && jc.wCaps & JOYCAPS_HASZ)
+        pos[axis++] = calcJoystickPos(ji.dwZpos, jc.wZmin, jc.wZmax);
+
+    if (axis < numaxes && jc.wCaps & JOYCAPS_HASR)
+        pos[axis++] = calcJoystickPos(ji.dwRpos, jc.wRmin, jc.wRmax);
+
+    if (axis < numaxes && jc.wCaps & JOYCAPS_HASU)
+        pos[axis++] = calcJoystickPos(ji.dwUpos, jc.wUmin, jc.wUmax);
+
+    if (axis < numaxes && jc.wCaps & JOYCAPS_HASV)
+        pos[axis++] = -calcJoystickPos(ji.dwVpos, jc.wVmin, jc.wVmax);
+
+    return axis;
+}
+
+
+//========================================================================
+// Get joystick button states
+//========================================================================
+
+int _glfwPlatformGetJoystickButtons(int joy, unsigned char* buttons,
+                                    int numbuttons)
+{
+    JOYCAPS jc;
+    JOYINFOEX ji;
+    int button;
+
+    if (!isJoystickPresent(joy))
+        return 0;
+
+    // Get joystick capabilities
+    _glfw_joyGetDevCaps(joy - GLFW_JOYSTICK_1, &jc, sizeof(JOYCAPS));
+
+    // Get joystick state
+    ji.dwSize = sizeof(JOYINFOEX);
+    ji.dwFlags = JOY_RETURNBUTTONS;
+    _glfw_joyGetPosEx(joy - GLFW_JOYSTICK_1, &ji);
+
+    // Get states of all requested buttons
+    for (button = 0;  button < numbuttons && button < (int) jc.wNumButtons;  button++)
+    {
+        buttons[button] = (unsigned char)
+            (ji.dwButtons & (1UL << button) ? GLFW_PRESS : GLFW_RELEASE);
+    }
+
+    return button;
+}
+